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Summary: Methods | Inherited Methods

# FileIntegrityManager

`public final class FileIntegrityManager`
`extends Object` ``

java.lang.Object
↳ | android.security.FileIntegrityManager

This class provides access to file integrity related operations.

## Summary

### Public methods
`boolean` | `isApkVeritySupported()` Returns true if APK Verity is supported on the device.
`boolean` | `isAppSourceCertificateTrusted(X509Certificate certificate)` Returns whether the given certificate can be used to prove app's install source.

### Inherited methods
From class `java.lang.Object`
`Object` | `clone()` Creates and returns a copy of this object.
`boolean` | `equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void` | `finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>` | `getClass()` Returns the runtime class of this `Object`.
`int` | `hashCode()` Returns a hash code value for the object.
`final void` | `notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void` | `notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String` | `toString()` Returns a string representation of the object.
`final void` | `wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void` | `wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void` | `wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

## Public methods

### isApkVeritySupported

    public boolean isApkVeritySupported ()

Returns true if APK Verity is supported on the device. When supported, an APK can be installed with a fs-verity signature (if verified with trusted App Source Certificate) for continuous on-access verification.

Returns
`boolean` |

### isAppSourceCertificateTrusted

    public boolean isAppSourceCertificateTrusted (X509Certificate certificate)

Returns whether the given certificate can be used to prove app's install source. Always return false if the feature is not supported.

A store can use this API to decide if a signature file needs to be downloaded. Also, if a store has shipped different certificates before (e.g. with stronger and weaker key), it can also use this API to download the best signature on the running device.
Requires `Manifest.permission.INSTALL_PACKAGES` or `Manifest.permission.REQUEST_INSTALL_PACKAGES`

Parameters
`certificate` | `X509Certificate`: This value cannot be `null`.

Returns
`boolean` | whether the certificate is trusted in the system

Throws
`CertificateEncodingException` |

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